Gravecrawler, Merrow Bonegnawer, Paradise Mantle, and Altar of Dementia

Prerequisites

• Gravecrawler on the battlefield
• Merrow Bonegnawer on the battlefield
• Paradise Mantle on the battlefield
• Altar of Dementia on the battlefield
• Paradise Mantle attached to Merrow Bonegnawer
• Merrow Bonegnawer does not have summoning sickness
• You control at least one additional Zombie

Steps

1. Activate Merrow Bonegnawer by tapping it, adding
2. Activate Altar of Dementia by sacrificing Gravecrawler, causing target player to mill cards equal to Gravecrawler's power
3. Cast Gravecrawler by paying
4. Merrow Bonegnawer triggers, untapping itself
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count